Drilling secant pile casing pipe for deep foundation pit construction

Abstract

The utility model discloses a drilling secant pile casing for deep foundation pit construction, and relates to the technical field of building construction, the drilling secant pile casing comprises a casing body and a funnel protection opening, a positioning assembly is arranged above the outer surface of the casing body, and measuring assemblies are arranged on the left side and the right side of the outer surface of the positioning assembly in a mirror image mode. When the casing pipe inclines leftwards and rightwards, due to the arrangement of the bearing block and the vertical plate, the sliding rod slides outwards from the interior of the plate block to reflect light and move out of the interior of the plate block, so that observation of an operator is facilitated, and front-back inclination of the casing pipe is conveniently measured through the arrangement of the connecting plate, the measuring block, the guide rod and the circular block; according to the sleeve measuring device, the phenomenon that the measuring block is conveniently observed is avoided, the problem that a current sleeve measuring structure is small and inconvenient for personnel to observe is solved, and the effect that when the sleeve is inclined, the measuring structure moves obviously, so that the personnel can conveniently observe whether the sleeve is vertical or not is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a casing for bored secant piles in deep foundation pit construction. Background Technique

[0002] A bored secant pile refers to a reinforced concrete "pile wall" formed by the adjacent piles in the plane layout biting each other (the circumferences of the piles are embedded). It is commonly used as a deep foundation pit support structure for structures. Nowadays, when constructing secant piles, it is necessary to first construct a guide wall at a predetermined position, then place the casing of the secant pile inside the guide wall, then drive the secant pile into the ground through a pile driver, remove the soil inside the casing, and finally pour concrete into the inside of the casing and pull out the casing.

[0003] However, in actual operation, we found that the existing casing structure is an integral pipeline. It is very difficult for us to determine the verticality of the casing. Coupled with the very complex construction environment on the construction site, if the casing angle cannot be quickly adjusted to ensure the verticality of the casing, the construction progress of the secant pile will be greatly reduced. Therefore, if there is a casing for secant pile construction that can use the mechanical mechanism set on its surface to quickly determine the verticality of the casing and can adjust it accordingly, and monitor whether the casing is vertical in real time, the construction efficiency of the secant pile can be greatly improved, and the time required for casing calibration can be shortened.

[0004] According to the patent publication number CN111980018B, a casing for bored secant piles in deep foundation pit construction includes a casing body. A protective mouth is sleeved at the top end of the casing body. A receiving ring is sleeved on the outer side of the top of the casing body. The receiving ring is of an annular structure and is fixedly connected to the casing body by screws. Four horizontal channel steels are evenly welded on its outer side. A hollow groove is fixedly sleeved on the outer side of its bottom. The number of the horizontal channel steels is four, and the four horizontal channel steels are all perpendicular to the receiving ring. The beneficial effects are as follows: In the present invention, a receiving ring is sleeved on the outer side of the casing, and four horizontal channel steels are evenly arranged on the outer side of the receiving ring. A load-bearing block is slidably connected to each horizontal channel steel. Therefore, when the casing tilts to one side, the user can quickly find that the load-bearing block will slide along the optical rod, and the thimble at its bottom end will also point to one side of the marking scale, which is convenient for the user to observe. Compared with the traditional technology, the present invention is provided with a verticality detection mechanism, which is convenient for the user to adjust the casing angle. The following problems exist in the prior art:

[0005] In the above-mentioned publication number CN111980018B, the structure for measuring the verticality of the casing is relatively small, resulting in the problem that it is not convenient for personnel to observe; at the same time, due to the phenomenon that the receiving ring is connected and fixed by a plurality of fixing bolts in the above-mentioned publication number CN111980018B, it results in the problem that it is not convenient for loading and unloading, and a wrench tool needs to be used for operation during loading and unloading, which is rather troublesome. Content of the Utility Model

[0006] The utility model provides a casing for drilled secant piles in deep foundation pit construction to solve the problems raised in the above-mentioned background technology.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A casing for drilled secant piles in deep foundation pit construction includes a casing body and a funnel mouth guard. A positioning component is arranged above the outer surface of the casing body, and measuring components are arranged on the left and right sides of the outer surface of the positioning component in a mirror image manner.

[0009] The measuring component includes a plate. One end of the plate away from the positioning component is provided with a vertical plate. Weight-bearing blocks are fixedly connected to both the upper and lower ends of the vertical plate. Connecting plates are fixedly arranged on both the left and right sides of the lower surface of the plate. A measuring block is movably connected to the opposite surfaces of the connecting plates. A guide rod is fixedly connected to the lower surface of the measuring block, and a circular block is fixedly connected to the lower end of the guide rod.

[0010] A further improvement of the technical solution of the utility model lies in that: a positioning ring is fixedly connected to one side of the plate away from the positioning component. A blocking column is slidably connected to the inside of the plate. A sliding rod is fixedly connected to the middle of the blocking column, and a reflective sticker is fixedly connected to the outer surface of the sliding rod.

[0011] A further improvement of the technical solution of the utility model lies in that: the outer surfaces of the sliding rod and the reflective sticker are slidably connected to the inside of the plate.

[0012] A further improvement of the technical solution of the utility model lies in that: a fixing bolt is fixedly connected to one side of the middle of the vertical plate close to the plate. The outer surface of the fixing bolt is threadedly connected to the inside of the sliding rod, and the opposite surfaces of the plate and the vertical plate are lapped.

[0013] A further improvement of the technical solution of the utility model lies in that: the positioning component includes a threaded sleeve and an annular block. The upper surface of the threaded sleeve is fixedly connected to the lower surface of the outer surface of the funnel mouth guard. The inner side of the threaded sleeve is threadedly connected to the upper surface of the outer surface of the casing body.

[0014] A further improvement of the technical solution of the utility model lies in that: four top blocks are fixedly connected to the lower surface of the threaded sleeve in an annular array. The lower surfaces of the four vertical plates are lapped with the upper surface of the annular block. The inner side of the annular block is sleeved on the outer surface of the casing body.

[0015] A further improvement of the technical solution of the utility model lies in that: a blocking ring is lapped on the lower surface of the annular block. The inner side of the blocking ring is fixedly connected to the outer surface of the casing body. Plug blocks are fixedly connected to both the front and rear sides of the upper surface of the blocking ring.

[0016] A further improvement of the technical solution of the present utility model lies in that: grooves are provided on both the front and rear sides of the outer surface of the annular block, the inner walls of the grooves communicate with each other inside and outside at the lower part, and the inside of the grooves is inserted with the outer surface of the plug block.

[0017] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is as follows:

[0018] 1. The present utility model provides a casing for a drilled secant pile in deep foundation pit construction, which adopts the mutual cooperation of a plate, a positioning ring, a retaining column, a sliding rod, a reflective sticker, a vertical plate, a fixing bolt, a load-bearing block, a connecting plate, a measuring block, a guide rod, and a circular block. When the casing tilts left and right, due to the arrangement of the load-bearing block and the vertical plate, the sliding rod slides outwards from the inside of the plate, and the reflective sticker moves out from the inside, so as to facilitate the operator's observation. Through the arrangement of the connecting plate, the measuring block, the guide rod, and the circular block, it is convenient to measure the front and rear tilt of the casing, so as to facilitate the observation of the measuring block, solving the problem that the current measuring structure of the casing is small and not convenient for personnel to observe, and achieving the effect that when the casing tilts, the measuring structure moves significantly, so as to facilitate personnel to observe whether the casing is vertical.

[0019] 2. The present utility model provides a casing for a drilled secant pile in deep foundation pit construction, which adopts the mutual cooperation of a threaded sleeve, a top block, an annular block, a groove, a positioning ring, and a plug block. Through the arrangement of the threaded sleeve, it is convenient to connect the casing body. Due to the arrangement of the top block, the annular block is tightened. Through the arrangement of the groove and the plug block, the phenomenon that the annular block shakes is prevented, solving the problem that the current connection and fixation are carried out through multiple fixing bolts, which is not convenient for loading and unloading, and achieving the effect of simple operation and convenient use, and without the need to operate with a tool wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural schematic diagram of the present utility model;

[0021] Figure 2 is a structural schematic diagram of the measuring component of the present utility model;

[0022] Figure 3 is an exploded structural schematic diagram of the measuring component of the present utility model;

[0023] Figure 4 is an exploded structural schematic diagram of the positioning component of the present utility model;

[0024] Figure 5 is an exploded structural schematic diagram of the annular block and the positioning ring of the present utility model.

[0025] In the figure: 1. Casing body; 2. Funnel mouth guard; 3. Positioning component; 31. Threaded sleeve; 32. Top block; 33. Ring block; 331. Groove; 34. Blocking ring; 341. Insert block; 4. Measuring component; 41. Plate; 411. Positioning ring; 412. Stop post; 413. Slide bar; 414. Reflective sticker; 42. Vertical plate; 421. Fixing bolt; 43. Load-bearing block; 44. Connecting plate; 45. Measuring block; 46. Guide rod; 47. Circular block. Detailed implementation mode

[0026] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further elaborated below in conjunction with the specific implementation modes.

[0027] As Figure 1 shown, the present utility model provides a bored secant pile casing for deep foundation pit construction, including a casing body 1 and a funnel mouth guard 2. A positioning component 3 is arranged above the outer surface of the casing body 1, and measuring components 4 are arranged on the left and right sides of the outer surface of the positioning component 3 in a mirror image manner;

[0028] Through the setting of the positioning component 3, the positioning of the measuring component 4 is facilitated. Through the setting of the funnel mouth guard 2, it is convenient for concrete to enter the inside of the casing body 1 during pouring. Through the color value of the measuring component 4, it can be judged whether the casing body 1 is inclined during use, which is convenient for calibrating the effect of the casing body 1 during use.

[0029] As Figure 2 - Figure 3 shown, the measuring component 4 includes a plate 41. A vertical plate 42 is arranged at one end of the plate 41 far from the positioning component 3. Load-bearing blocks 43 are fixedly connected to both the upper and lower ends of the vertical plate 42. Connecting plates 44 are fixedly arranged on both the left and right sides of the lower surface of the plate 41. A measuring block 45 is movably connected to the opposite surfaces of the connecting plates 44. A guide rod 46 is fixedly connected to the lower surface of the measuring block 45. A circular block 47 is fixedly connected to the lower end of the guide rod 46. A positioning ring 411 is fixedly connected to one side of the inside of the plate 41 far from the positioning component 3. A stop post 412 is slidably connected to the inside of the plate 41. A slide bar 413 is fixedly connected to the middle of the stop post 412. A reflective sticker 414 is fixedly connected to the outer surface of the slide bar 413. The outer surfaces of the slide bar 413 and the reflective sticker 414 are slidably connected to the inside of the plate 41. A fixing bolt 421 is fixedly connected to one side of the middle of the vertical plate 42 close to the plate 41. The outer surface of the fixing bolt 421 is threadedly connected to the inside of the slide bar 413. The opposite surfaces of the plate 41 and the vertical plate 42 are lapped;

[0030] When the casing body 1 tilts to one side in the left - right direction and drives the measuring assembly 4, when one side of the measuring assembly 4 is in an inclined state, due to the weight, the weight - bearing block 43 and the vertical plate 42 move, causing the slide rod 413 to slide and move out inside the plate 41, and the reflective sticker 414 to move out from the inside, which is convenient for personnel to observe. Through the settings of the stop post 412 and the positioning ring 411, it is convenient to limit the position of the slide rod 413, preventing the slide rod 413 from sliding out of the plate 41 when the tilting force of the casing body 1 is large. Through the setting of the fixing bolt 421, it is convenient to load and unload the vertical plate 42 and the slide rod 413. At this time, the vertical plate 42 in the other measuring assembly 4 remains stationary. When the casing body 1 tilts to one side in the front - back direction, the measuring block 45 moves between the two connecting plates 44. At this time, the connecting plates 44 and the measuring block 45 are displaced from the horizontal and vertical states. Through the settings of the guide rod 46 and the circular block 47, it is convenient for personnel to observe the movement amplitude of the measuring block 45.

[0031] As Figure 4 - Figure 5 Shown in the figure, the positioning assembly 3 includes a threaded sleeve 31 and an annular block 33. The upper surface of the threaded sleeve 31 is fixedly connected to the lower outer surface of the funnel mouth protector 2. The inner side of the threaded sleeve 31 is threadedly connected to the upper outer surface of the casing body 1. The lower surface of the threaded sleeve 31 is fixedly connected with four top blocks 32 in an annular array. The lower surfaces of the four vertical plates 42 are lapped on the upper surface of the annular block 33. The inner side of the annular block 33 is sleeved on the outer surface of the casing body 1. A blocking ring 34 is lapped on the lower surface of the annular block 33. The inner side of the blocking ring 34 is fixedly connected to the outer surface of the casing body 1. On the front and rear sides of the upper surface of the blocking ring 34, insertion blocks 341 are fixedly connected. On the front and rear sides of the outer surface of the annular block 33, grooves 331 are opened. The inner wall of the lower part of the groove 331 is internally and externally connected. The inside of the groove 331 is inserted with the outer surface of the insertion block 341.

[0032] When disassembly is required, by rotating the funnel mouth protector 2 counter - clockwise, the threaded sleeve 31 is driven, causing the top block 32 to separate from the upper surface of the annular block 33, and then the funnel mouth protector 2 is removed. Then, by moving the measuring assembly 4, the annular block 33 is driven to slide on the outer surface of the casing body 1. When it slides to an appropriate position, it is separated from the casing body 1, thus completing the disassembly operation. Conversely, when installation is required, the annular block 33 is sleeved on the casing body 1 and contacts the blocking ring 34. At this time, the insertion block 341 enters the inside of the groove 331. Then, the threaded sleeve 31 is rotated and threadedly connected to the casing body 1. When it rotates to an appropriate position, due to the action of the top block 32, the annular block 33 is tightened, playing a role in positioning the position, thus facilitating the installation effect.

[0033] The working principle of the casing for the bored secant pile used in deep foundation pit construction will be specifically described below.

[0034] When the casing body 1 tilts to one side in the left - right direction and drives the measuring component 4, since one side of the measuring component 4 is in an inclined state, the weight block 43 and the vertical plate 42 move under the action of gravity, causing the sliding rod 413 to slide and move out inside the plate 41, and the reflective sticker 414 to move out from the inside, thus facilitating the observation by personnel. When the casing body 1 tilts to one side in the front - back direction, the measuring block 45 moves between the two connecting plates 44. Through the arrangement of the guide rod 46 and the circular block 47, it is convenient for personnel to observe the movement range of the measuring block 45. When disassembly is required, the funnel mouth guard 2 is rotated counterclockwise to drive the threaded sleeve 31 and the top block 32, so as to remove the funnel mouth guard 2. Then, by moving the measuring component 4, the annular block 33 is driven to slide on the outer surface of the casing body 1. When it slides to the appropriate position, it is separated from the casing body 1, thus completing the disassembly operation.

[0035] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the technical field. Therefore, modifications or improvements made without departing from the spirit of the present utility model are within the protection scope of the present utility model.

Claims

1. A bored pile casing for deep foundation pit construction, comprising a casing body (1) and a funnel guard (2), characterized in that: A positioning component (3) is arranged above the outer surface of the sleeve body (1), and measurement components (4) are arranged in a mirror-like manner on both left and right sides of the outer surface of the positioning component (3); The measuring assembly (4) comprises a plate (41), and a vertical plate (42) is arranged at one end of the plate (41) away from the positioning assembly (3). The upper and lower ends of the vertical plate (42) are fixedly connected to load-bearing blocks (43). The lower surface of the plate (41) is fixedly fixed with connecting plates (44) on both left and right sides. The opposite surface of the connecting plate (44) is movably connected to a measuring block (45). The lower surface of the measuring block (45) is fixedly connected to a guide rod (46), and the lower end of the guide rod (46) is fixedly connected to a circular block (47).

2. The bored interlocking pile casing for deep foundation pit construction according to claim 1, characterized in that: A positioning ring (411) is fixedly connected to a side of the plate (41) away from the positioning assembly (3), a blocking column (412) is slidably connected to the inside of the plate (41), a sliding rod (413) is fixedly connected to the middle of the blocking column (412), and a reflective tape (414) is fixedly connected to the outer surface of the sliding rod (413).

3. The bored interlocking pile casing for deep foundation pit construction according to claim 2, characterized in that: The outer surfaces of the sliding rod (413) and the reflective tape (414) are slidably connected to the interior of the plate (41).

4. The bored interlocking pile casing for deep foundation pit construction according to claim 1, characterized in that: A fixing bolt (421) is fixedly connected to one side of the middle of the vertical plate (42) close to the plate (41), and the outer surface of the fixing bolt (421) is connected to the inner thread of the sliding rod (413), and the opposite surfaces of the plate (41) and the vertical plate (42) are overlapped.

5. The bored interlocking pile casing for deep foundation pit construction according to claim 1, characterized in that: The positioning assembly (3) comprises a threaded sleeve (31) and an annular block (33); the upper surface of the threaded sleeve (31) is fixedly connected to the lower side of the outer surface of the funnel guard (2); the inner side of the threaded sleeve (31) is threadedly connected to the upper side of the outer surface of the sleeve body (1).

6. The bored interlocking pile casing for deep foundation pit construction according to claim 5, characterized in that: The lower surface of the threaded sleeve (31) is fixedly connected to four top blocks (32) in an annular array, the lower surfaces of the four vertical plates (42) overlap the upper surface of the annular block (33), and the inner side of the annular block (33) is sleeved with the outer surface of the sleeve body (1).

7. The bored interlocking pile casing for deep foundation pit construction according to claim 5, characterized in that: The lower surface of the annular block (33) is overlapped with a blocking ring (34), the inner side of the blocking ring (34) is fixedly connected to the outer surface of the sleeve body (1), and the upper surface of the blocking ring (34) is fixedly connected to plug blocks (341) on both the front and rear sides.

8. The bored interlocking pile casing for deep foundation pit construction according to claim 5, characterized in that: Grooves (331) are provided on both the front and rear sides of the outer surface of the annular block (33), the inner wall of the groove (331) below is in communication with the inside and outside, and the inside of the groove (331) is plugged into the outer surface of the plug block (341).

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